Portion of a shoe upper



FIG. 1 is a front perspective view of a portion of a shoe upper showing my new design.

FIG. 2 is a rear perspective view thereof; and,

FIG. 3 is a side elevational view thereof.

The broken lines immediately adjacent to the shaded areas represent unclaimed boundaries of the design. The broken lines showing of the remainder of the shoe are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a portion of a shoe upper, as shown and described. 